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