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