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