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