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)(19,28)(20,24)(21,25)(22,26)(23,27)(29,30)(31,32)(36,44)(40,47)(43,48)(45,46) involution — undirected(1,2,6,3)(4,7,11,9)(5,8,13,10)(12,14,16,15)(19,20)(24,28)(29,31)(30,32)(33,34)(35,39)(36,40)(37,41)(38,42)(43,46)(44,47)(45,48)(17,19,23,20)(18,24,27,28)(21,29,26,31)(22,30,25,32)(33,35)(34,37)(36,43)(38,41)(39,42)(40,45)(44,48)(46,47)(1,3,6,2)(4,9,11,7)(5,8,13,10)(12,14,16,15)(17,20,23,19)(18,24,27,28)(21,31,26,29)(22,30,25,32)(33,35)(34,39)(36,43)(37,42)(38,41)(40,46)(44,48)(45,47)(1,4)(2,7)(3,9)(5,12)(6,11)(8,14)(10,15)(13,16)(17,21,23,26)(18,25,27,22)(19,29,20,31)(24,32,28,30)(33,36,38,44)(34,40,42,47)(35,43,41,48)(37,45,39,46)(1,5,6,13)(2,8,3,10)(4,12,11,16)(7,14,9,15)(17,22,23,25)(18,26,27,21)(19,30,20,32)(24,31,28,29)(33,37,38,39)(34,41,42,35)(36,45,44,46)(40,48,47,43)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.