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