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