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