One vertex per element, one color per generator, with an edge from x to x·s.
(1,2)(3,8)(4,6)(5,14)(7,9)(10,13)(11,16)(12,15)(19,25)(22,26)(27,31)(30,32)(33,34)(35,37)(36,44)(38,39)(40,42)(41,46)(43,47)(45,48) involution — undirected(1,3)(2,8)(4,13)(5,11)(6,10)(7,12)(9,15)(14,16)(17,18)(19,26)(20,28)(21,24)(22,25)(23,29)(27,30)(31,32)(34,39)(35,42)(41,44)(43,48) involution — undirected(2,9)(3,12)(4,11)(10,14)(17,18,21,24)(19,22,25,26)(20,23,29,28)(27,30,31,32)(33,35,38,42)(34,40,39,37)(36,43,46,48)(41,47,44,45)(1,4,7,11)(2,6,9,16)(3,13,12,5)(8,10,15,14)(17,18)(19,22)(20,23)(21,24)(25,26)(27,30)(28,29)(31,32)(33,36)(34,41)(35,43)(37,45)(38,46)(39,44)(40,47)(42,48)(1,5,7,13)(2,10,9,14)(3,11,12,4)(6,15,16,8)(17,19,21,25)(18,22,24,26)(20,27,29,31)(23,30,28,32)(33,34)(35,40)(36,41)(37,42)(38,39)(43,47)(44,46)(45,48)(1,6)(2,11)(3,14)(4,9)(5,15)(7,16)(8,13)(10,12)(17,20)(18,23)(19,27)(21,29)(22,30)(24,28)(25,31)(26,32)(33,37,38,40)(34,42,39,35)(36,45,46,47)(41,48,44,43)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.