One vertex per element, one color per generator, with an edge from x to x·s.
(1,2)(3,5)(4,13)(6,15)(7,8)(9,14)(10,12)(11,16)(17,18)(19,29)(20,23)(21,26)(22,27)(24,28)(25,31)(30,32)(33,34)(35,43)(36,37)(38,41)(39,42)(40,46)(44,48)(45,47) involution — undirected(1,3,7,11)(2,5,8,16)(4,12,14,6)(9,15,13,10)(17,19,24,31)(18,25,28,29)(20,30,21,22)(23,27,26,32)(33,35)(34,40)(36,44)(37,45)(38,47)(39,46)(41,48)(42,43)(2,8)(3,11)(4,14)(10,15)(17,20,24,21)(18,23,28,26)(19,30,31,22)(25,27,29,32)(33,36,39,38)(34,41,42,37)(35,44,46,47)(40,48,43,45)(1,4)(2,9)(3,12)(5,15)(6,11)(7,14)(8,13)(10,16)(17,21,24,20)(18,26,28,23)(19,22,31,30)(25,32,29,27)(33,37,39,41)(34,36,42,38)(35,45,46,48)(40,44,43,47)(1,5)(2,3)(4,15)(6,13)(7,16)(8,11)(9,12)(10,14)(17,22)(18,27)(19,20)(21,31)(23,29)(24,30)(25,26)(28,32)(33,38,39,36)(34,41,42,37)(35,44,46,47)(40,45,43,48)(1,6,7,12)(2,10,8,15)(3,4,11,14)(5,9,16,13)(17,23,24,26)(18,20,28,21)(19,27,31,32)(22,25,30,29)(33,35)(34,40)(36,44)(37,45)(38,47)(39,46)(41,48)(42,43)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.