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