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