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