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