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