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