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