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