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