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